RA urges members to attend PRC meeting — In the latest Reston Today video, Reston Association’s Board President Andy Sigle urges RA members who are concerned about population density to attend a Jan. 23 meeting related to the county’s proposed amendment to the Planned Residential Community zoning ordinance. [YouTube]

Dense fog alert — This morning the National Weather Service issued a dense fog advisory until noon today for portions of the region, including Fairfax County. Drivers are encouraged to slow down, use their headlights and leave plenty of distance ahead of you. [National Weather Service]

Ed-tech merger — Herndon-based Real Time Cases merged with Delray Beach, Fla.-based Elearis. The Herndon startup’s ideo-based business case studies paired up with the technology platform from Elearis for a new Herndon-based firm. [Washington Business Journal]

Hairspray is on the way — Reston Community Center will present “Hairspray,” the winner of eight Tony Awards, including best musical, on Oct 19 and through Nov. 10. Tickets range between $24 and $28. [The Connection]

‘Muscle Up Mondays’ today at 6:30 p.m. Get your work week started with a work out during a free group fitness class in the pavilion of Reston Town Center, presented by Crunch Fitness. [Reston Town Center via Facebook]

Fog advisory in effect until 10 a.m. — Areas of dense fog will cause reductions in visibility and rapidly changing travel conditions. Visibility may often be reduced to less than one-quarter mile. [National Weather Service]

A piece of the Pentagon — The Fairfax County Police Department and the Fairfax County Fire & Rescue Department were honored with a piece of the Pentagon to display in the museum of the Fairfax County Public Safety Department’s headquarters. [Fairfax County Police Department]

Make your vehicle visible to others both ahead of you and behind you by using your low-beam headlights since this means your taillights will also be on. Use fog lights if you have them.

Never use your high-beam lights. Using high beam lights causes glare, making it more difficult for you to see what’s ahead of you on the road.

Leave plenty of distance between you and the vehicle in front of you to account for sudden stops or changes in the traffic pattern.

To ensure you are staying in the proper lane, follow the lines on the road with your eyes.

In extremely dense fog where visibility is near zero, the best course of action is to first turn on your hazard lights, then simply pull into a safe location such as a parking lot of a local business and stop.